cPanel Autoresponder PHP form

I'm trying to setup a more secure autoresponder for an online product registration form.

The form is set to email us, from us i.e. to: info@test.com, from: info@test.com, however the user has to submit their email address to the form that is passed to us within the email subject and email body.

My question is whether it is possible to setup a cPanel autoresponder to the email address within the body or subject, otherwise we'll just be autoresponding to ourselves !

Better way to respond to user is, in same form the subject and email body can be send to user at specified email id when user submits the form. That means when user submits the form you generate 2 emails, 1 from info to info and another from info to user with same subject and message body.